#
c34e9ab9 |
| 05-Dec-2024 |
Takashi Iwai <tiwai@suse.de> |
Merge tag 'asoc-fix-v6.13-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v6.13
A few small fixes for v6.13, all system specific - the biggest t
Merge tag 'asoc-fix-v6.13-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v6.13
A few small fixes for v6.13, all system specific - the biggest thing is the fix for jack handling over suspend on some Intel laptops.
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Revision tags: v6.13-rc1 |
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#
cf87766d |
| 26-Nov-2024 |
Christian Brauner <brauner@kernel.org> |
Merge branch 'ovl.fixes'
Bring in an overlayfs fix for v6.13-rc1 that fixes a bug introduced by the overlayfs changes merged for v6.13.
Signed-off-by: Christian Brauner <brauner@kernel.org>
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#
fcc79e17 |
| 21-Nov-2024 |
Linus Torvalds <torvalds@linux-foundation.org> |
Merge tag 'net-next-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni: "The most significant set of changes is the per netns RTNL. The
Merge tag 'net-next-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni: "The most significant set of changes is the per netns RTNL. The new behavior is disabled by default, regression risk should be contained.
Notably the new config knob PTP_1588_CLOCK_VMCLOCK will inherit its default value from PTP_1588_CLOCK_KVM, as the first is intended to be a more reliable replacement for the latter.
Core:
- Started a very large, in-progress, effort to make the RTNL lock scope per network-namespace, thus reducing the lock contention significantly in the containerized use-case, comprising: - RCU-ified some relevant slices of the FIB control path - introduce basic per netns locking helpers - namespacified the IPv4 address hash table - remove rtnl_register{,_module}() in favour of rtnl_register_many() - refactor rtnl_{new,del,set}link() moving as much validation as possible out of RTNL lock - convert all phonet doit() and dumpit() handlers to RCU - convert IPv4 addresses manipulation to per-netns RTNL - convert virtual interface creation to per-netns RTNL the per-netns lock infrastructure is guarded by the CONFIG_DEBUG_NET_SMALL_RTNL knob, disabled by default ad interim.
- Introduce NAPI suspension, to efficiently switching between busy polling (NAPI processing suspended) and normal processing.
- Migrate the IPv4 routing input, output and control path from direct ToS usage to DSCP macros. This is a work in progress to make ECN handling consistent and reliable.
- Add drop reasons support to the IPv4 rotue input path, allowing better introspection in case of packets drop.
- Make FIB seqnum lockless, dropping RTNL protection for read access.
- Make inet{,v6} addresses hashing less predicable.
- Allow providing timestamp OPT_ID via cmsg, to correlate TX packets and timestamps
Things we sprinkled into general kernel code:
- Add small file operations for debugfs, to reduce the struct ops size.
- Refactoring and optimization for the implementation of page_frag API, This is a preparatory work to consolidate the page_frag implementation.
Netfilter:
- Optimize set element transactions to reduce memory consumption
- Extended netlink error reporting for attribute parser failure.
- Make legacy xtables configs user selectable, giving users the option to configure iptables without enabling any other config.
- Address a lot of false-positive RCU issues, pointed by recent CI improvements.
BPF:
- Put xsk sockets on a struct diet and add various cleanups. Overall, this helps to bump performance by 12% for some workloads.
- Extend BPF selftests to increase coverage of XDP features in combination with BPF cpumap.
- Optimize and homogenize bpf_csum_diff helper for all archs and also add a batch of new BPF selftests for it.
- Extend netkit with an option to delegate skb->{mark,priority} scrubbing to its BPF program.
- Make the bpf_get_netns_cookie() helper available also to tc(x) BPF programs.
Protocols:
- Introduces 4-tuple hash for connected udp sockets, speeding-up significantly connected sockets lookup.
- Add a fastpath for some TCP timers that usually expires after close, the socket lock contention.
- Add inbound and outbound xfrm state caches to speed up state lookups.
- Avoid sending MPTCP advertisements on stale subflows, reducing risks on loosing them.
- Make neighbours table flushing more scalable, maintaining per device neigh lists.
Driver API:
- Introduce a unified interface to configure transmission H/W shaping, and expose it to user-space via generic-netlink.
- Add support for per-NAPI config via netlink. This makes napi configuration persistent across queues removal and re-creation. Requires driver updates, currently supported drivers are: nVidia/Mellanox mlx4 and mlx5, Broadcom brcm and Intel ice.
- Add ethtool support for writing SFP / PHY firmware blocks.
- Track RSS context allocation from ethtool core.
- Implement support for mirroring to DSA CPU port, via TC mirror offload.
- Consolidate FDB updates notification, to avoid duplicates on device-specific entries.
- Expose DPLL clock quality level to the user-space.
- Support master-slave PHY config via device tree.
Tests and tooling:
- forwarding: introduce deferred commands, to simplify the cleanup phase
Drivers:
- Updated several drivers - Amazon vNic, Google vNic, Microsoft vNic, Intel e1000e and Broadcom Tigon3 - to use netdev-genl to link the IRQs and queues to NAPI IDs, allowing busy polling and better introspection.
- Ethernet high-speed NICs: - nVidia/Mellanox: - mlx5: - a large refactor to implement support for cross E-Switch scheduling - refactor H/W conter management to let it scale better - H/W GRO cleanups - Intel (100G, ice):: - add support for ethtool reset - implement support for per TX queue H/W shaping - AMD/Solarflare: - implement per device queue stats support - Broadcom (bnxt): - improve wildcard l4proto on IPv4/IPv6 ntuple rules - Marvell Octeon: - Add representor support for each Resource Virtualization Unit (RVU) device. - Hisilicon: - add support for the BMC Gigabit Ethernet - IBM (EMAC): - driver cleanup and modernization - Cisco (VIC): - raise the queues number limit to 256
- Ethernet virtual: - Google vNIC: - implement page pool support - macsec: - inherit lower device's features and TSO limits when offloading - virtio_net: - enable premapped mode by default - support for XDP socket(AF_XDP) zerocopy TX - wireguard: - set the TSO max size to be GSO_MAX_SIZE, to aggregate larger packets.
- Ethernet NICs embedded and virtual: - Broadcom ASP: - enable software timestamping - Freescale: - add enetc4 PF driver - MediaTek: Airoha SoC: - implement BQL support - RealTek r8169: - enable TSO by default on r8168/r8125 - implement extended ethtool stats - Renesas AVB: - enable TX checksum offload - Synopsys (stmmac): - support header splitting for vlan tagged packets - move common code for DWMAC4 and DWXGMAC into a separate FPE module. - add dwmac driver support for T-HEAD TH1520 SoC - Synopsys (xpcs): - driver refactor and cleanup - TI: - icssg_prueth: add VLAN offload support - Xilinx emaclite: - add clock support
- Ethernet switches: - Microchip: - implement support for the lan969x Ethernet switch family - add LAN9646 switch support to KSZ DSA driver
- Ethernet PHYs: - Marvel: 88q2x: enable auto negotiation - Microchip: add support for LAN865X Rev B1 and LAN867X Rev C1/C2
- PTP: - Add support for the Amazon virtual clock device - Add PtP driver for s390 clocks
- WiFi: - mac80211 - EHT 1024 aggregation size for transmissions - new operation to indicate that a new interface is to be added - support radio separation of multi-band devices - move wireless extension spy implementation to libiw - Broadcom: - brcmfmac: optional LPO clock support - Microchip: - add support for Atmel WILC3000 - Qualcomm (ath12k): - firmware coredump collection support - add debugfs support for a multitude of statistics - Qualcomm (ath5k): - Arcadyan ARV45XX AR2417 & Gigaset SX76[23] AR241[34]A support - Realtek: - rtw88: 8821au and 8812au USB adapters support - rtw89: add thermal protection - rtw89: fine tune BT-coexsitence to improve user experience - rtw89: firmware secure boot for WiFi 6 chip
- Bluetooth - add Qualcomm WCN785x support for ids Foxconn 0xe0fc/0xe0f3 and 0x13d3:0x3623 - add Realtek RTL8852BE support for id Foxconn 0xe123 - add MediaTek MT7920 support for wireless module ids - btintel_pcie: add handshake between driver and firmware - btintel_pcie: add recovery mechanism - btnxpuart: add GPIO support to power save feature"
* tag 'net-next-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1475 commits) mm: page_frag: fix a compile error when kernel is not compiled Documentation: tipc: fix formatting issue in tipc.rst selftests: nic_performance: Add selftest for performance of NIC driver selftests: nic_link_layer: Add selftest case for speed and duplex states selftests: nic_link_layer: Add link layer selftest for NIC driver bnxt_en: Add FW trace coredump segments to the coredump bnxt_en: Add a new ethtool -W dump flag bnxt_en: Add 2 parameters to bnxt_fill_coredump_seg_hdr() bnxt_en: Add functions to copy host context memory bnxt_en: Do not free FW log context memory bnxt_en: Manage the FW trace context memory bnxt_en: Allocate backing store memory for FW trace logs bnxt_en: Add a 'force' parameter to bnxt_free_ctx_mem() bnxt_en: Refactor bnxt_free_ctx_mem() bnxt_en: Add mem_valid bit to struct bnxt_ctx_mem_type bnxt_en: Update firmware interface spec to 1.10.3.85 selftests/bpf: Add some tests with sockmap SK_PASS bpf: fix recursive lock when verdict program return SK_PASS wireguard: device: support big tcp GSO wireguard: selftests: load nf_conntrack if not present ...
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Revision tags: v6.12, v6.12-rc7, v6.12-rc6, v6.12-rc5, v6.12-rc4 |
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#
df241295 |
| 16-Oct-2024 |
Jakub Kicinski <kuba@kernel.org> |
Merge branch 'gve-adopt-page-pool'
Harshitha Ramamurthy says:
==================== gve: adopt page pool
This patchset implements page pool support for gve. The first patch deals with movement of c
Merge branch 'gve-adopt-page-pool'
Harshitha Ramamurthy says:
==================== gve: adopt page pool
This patchset implements page pool support for gve. The first patch deals with movement of code to make page pool adoption easier in the next patch. The second patch adopts the page pool API. The third patch adds basic per queue stats which includes page pool allocation failures as well. ====================
Link: https://patch.msgid.link/20241014202108.1051963-1-pkaligineedi@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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#
ebdfae0d |
| 14-Oct-2024 |
Harshitha Ramamurthy <hramamurthy@google.com> |
gve: adopt page pool for DQ RDA mode
For DQ queue format in raw DMA addressing(RDA) mode, implement page pool recycling of buffers by leveraging a few helper functions.
DQ QPL mode will continue to
gve: adopt page pool for DQ RDA mode
For DQ queue format in raw DMA addressing(RDA) mode, implement page pool recycling of buffers by leveraging a few helper functions.
DQ QPL mode will continue to use the exisiting recycling logic. This is because in QPL mode, the pages come from a constant set of pages that the driver pre-allocates and registers with the device.
Reviewed-by: Praveen Kaligineedi <pkaligineedi@google.com> Reviewed-by: Shailend Chand <shailend@google.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Signed-off-by: Harshitha Ramamurthy <hramamurthy@google.com> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Link: https://patch.msgid.link/20241014202108.1051963-3-pkaligineedi@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Revision tags: v6.12-rc3, v6.12-rc2, v6.12-rc1, v6.11, v6.11-rc7, v6.11-rc6, v6.11-rc5, v6.11-rc4, v6.11-rc3, v6.11-rc2, v6.11-rc1, v6.10, v6.10-rc7, v6.10-rc6, v6.10-rc5, v6.10-rc4, v6.10-rc3, v6.10-rc2, v6.10-rc1, v6.9, v6.9-rc7, v6.9-rc6, v6.9-rc5, v6.9-rc4, v6.9-rc3, v6.9-rc2, v6.9-rc1, v6.8, v6.8-rc7, v6.8-rc6, v6.8-rc5, v6.8-rc4, v6.8-rc3, v6.8-rc2, v6.8-rc1, v6.7, v6.7-rc8, v6.7-rc7, v6.7-rc6, v6.7-rc5, v6.7-rc4, v6.7-rc3, v6.7-rc2, v6.7-rc1, v6.6, v6.6-rc7, v6.6-rc6, v6.6-rc5, v6.6-rc4, v6.6-rc3, v6.6-rc2, v6.6-rc1, v6.5, v6.5-rc7, v6.5-rc6, v6.5-rc5, v6.5-rc4, v6.5-rc3, v6.5-rc2, v6.5-rc1, v6.4, v6.4-rc7, v6.4-rc6, v6.4-rc5, v6.4-rc4, v6.4-rc3, v6.4-rc2, v6.4-rc1, v6.3, v6.3-rc7, v6.3-rc6, v6.3-rc5, v6.3-rc4, v6.3-rc3, v6.3-rc2, v6.3-rc1, v6.2, v6.2-rc8, v6.2-rc7, v6.2-rc6, v6.2-rc5, v6.2-rc4, v6.2-rc3, v6.2-rc2, v6.2-rc1, v6.1, v6.1-rc8, v6.1-rc7, v6.1-rc6, v6.1-rc5, v6.1-rc4, v6.1-rc3, v6.1-rc2, v6.1-rc1, v6.0, v6.0-rc7, v6.0-rc6, v6.0-rc5, v6.0-rc4, v6.0-rc3, v6.0-rc2, v6.0-rc1, v5.19, v5.19-rc8, v5.19-rc7, v5.19-rc6, v5.19-rc5, v5.19-rc4, v5.19-rc3, v5.19-rc2, v5.19-rc1, v5.18, v5.18-rc7, v5.18-rc6, v5.18-rc5, v5.18-rc4, v5.18-rc3, v5.18-rc2, v5.18-rc1, v5.17, v5.17-rc8, v5.17-rc7, v5.17-rc6, v5.17-rc5, v5.17-rc4, v5.17-rc3, v5.17-rc2, v5.17-rc1 |
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#
762f99f4 |
| 15-Jan-2022 |
Dmitry Torokhov <dmitry.torokhov@gmail.com> |
Merge branch 'next' into for-linus
Prepare input updates for 5.17 merge window.
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Revision tags: v5.16, v5.16-rc8, v5.16-rc7, v5.16-rc6, v5.16-rc5 |
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5d8dfaa7 |
| 09-Dec-2021 |
Dmitry Torokhov <dmitry.torokhov@gmail.com> |
Merge tag 'v5.15' into next
Sync up with the mainline to get the latest APIs and DT bindings.
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Revision tags: v5.16-rc4, v5.16-rc3, v5.16-rc2, v5.16-rc1, v5.15, v5.15-rc7, v5.15-rc6, v5.15-rc5, v5.15-rc4, v5.15-rc3, v5.15-rc2, v5.15-rc1 |
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71af75b6 |
| 30-Aug-2021 |
Petr Mladek <pmladek@suse.com> |
Merge branch 'for-5.15-printk-index' into for-linus
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Revision tags: v5.14 |
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46466ae3 |
| 26-Aug-2021 |
Ingo Molnar <mingo@kernel.org> |
Merge branch 'perf/urgent' into perf/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Revision tags: v5.14-rc7 |
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c87866ed |
| 17-Aug-2021 |
Ingo Molnar <mingo@kernel.org> |
Merge tag 'v5.14-rc6' into locking/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Revision tags: v5.14-rc6, v5.14-rc5, v5.14-rc4 |
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ca31fef1 |
| 27-Jul-2021 |
Maarten Lankhorst <maarten.lankhorst@linux.intel.com> |
Backmerge remote-tracking branch 'drm/drm-next' into drm-misc-next
Required bump from v5.13-rc3 to v5.14-rc3, and to pick up sysfb compilation fixes.
Signed-off-by: Maarten Lankhorst <maarten.lankh
Backmerge remote-tracking branch 'drm/drm-next' into drm-misc-next
Required bump from v5.13-rc3 to v5.14-rc3, and to pick up sysfb compilation fixes.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
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Revision tags: v5.14-rc3, v5.14-rc2 |
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#
611ac726 |
| 13-Jul-2021 |
Rodrigo Vivi <rodrigo.vivi@intel.com> |
Merge drm/drm-next into drm-intel-gt-next
Catching up with 5.14-rc1 and also preparing for a needed common topic branch for the "Minor revid/stepping and workaround cleanup"
Reference: https://patc
Merge drm/drm-next into drm-intel-gt-next
Catching up with 5.14-rc1 and also preparing for a needed common topic branch for the "Minor revid/stepping and workaround cleanup"
Reference: https://patchwork.freedesktop.org/series/92299/ Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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d5bfbad2 |
| 13-Jul-2021 |
Rodrigo Vivi <rodrigo.vivi@intel.com> |
Merge drm/drm-next into drm-intel-next
Catching up with 5.14-rc1
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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353b7a55 |
| 27-Jul-2021 |
Tony Lindgren <tony@atomide.com> |
Merge branch 'fixes-v5.14' into fixes
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Revision tags: v5.14-rc1 |
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dbe69e43 |
| 01-Jul-2021 |
Linus Torvalds <torvalds@linux-foundation.org> |
Merge tag 'net-next-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski: "Core:
- BPF: - add syscall program type and libbpf
Merge tag 'net-next-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski: "Core:
- BPF: - add syscall program type and libbpf support for generating instructions and bindings for in-kernel BPF loaders (BPF loaders for BPF), this is a stepping stone for signed BPF programs - infrastructure to migrate TCP child sockets from one listener to another in the same reuseport group/map to improve flexibility of service hand-off/restart - add broadcast support to XDP redirect
- allow bypass of the lockless qdisc to improving performance (for pktgen: +23% with one thread, +44% with 2 threads)
- add a simpler version of "DO_ONCE()" which does not require jump labels, intended for slow-path usage
- virtio/vsock: introduce SOCK_SEQPACKET support
- add getsocketopt to retrieve netns cookie
- ip: treat lowest address of a IPv4 subnet as ordinary unicast address allowing reclaiming of precious IPv4 addresses
- ipv6: use prandom_u32() for ID generation
- ip: add support for more flexible field selection for hashing across multi-path routes (w/ offload to mlxsw)
- icmp: add support for extended RFC 8335 PROBE (ping)
- seg6: add support for SRv6 End.DT46 behavior
- mptcp: - DSS checksum support (RFC 8684) to detect middlebox meddling - support Connection-time 'C' flag - time stamping support
- sctp: packetization Layer Path MTU Discovery (RFC 8899)
- xfrm: speed up state addition with seq set
- WiFi: - hidden AP discovery on 6 GHz and other HE 6 GHz improvements - aggregation handling improvements for some drivers - minstrel improvements for no-ack frames - deferred rate control for TXQs to improve reaction times - switch from round robin to virtual time-based airtime scheduler
- add trace points: - tcp checksum errors - openvswitch - action execution, upcalls - socket errors via sk_error_report
Device APIs:
- devlink: add rate API for hierarchical control of max egress rate of virtual devices (VFs, SFs etc.)
- don't require RCU read lock to be held around BPF hooks in NAPI context
- page_pool: generic buffer recycling
New hardware/drivers:
- mobile: - iosm: PCIe Driver for Intel M.2 Modem - support for Qualcomm MSM8998 (ipa)
- WiFi: Qualcomm QCN9074 and WCN6855 PCI devices
- sparx5: Microchip SparX-5 family of Enterprise Ethernet switches
- Mellanox BlueField Gigabit Ethernet (control NIC of the DPU)
- NXP SJA1110 Automotive Ethernet 10-port switch
- Qualcomm QCA8327 switch support (qca8k)
- Mikrotik 10/25G NIC (atl1c)
Driver changes:
- ACPI support for some MDIO, MAC and PHY devices from Marvell and NXP (our first foray into MAC/PHY description via ACPI)
- HW timestamping (PTP) support: bnxt_en, ice, sja1105, hns3, tja11xx
- Mellanox/Nvidia NIC (mlx5) - NIC VF offload of L2 bridging - support IRQ distribution to Sub-functions
- Marvell (prestera): - add flower and match all - devlink trap - link aggregation
- Netronome (nfp): connection tracking offload
- Intel 1GE (igc): add AF_XDP support
- Marvell DPU (octeontx2): ingress ratelimit offload
- Google vNIC (gve): new ring/descriptor format support
- Qualcomm mobile (rmnet & ipa): inline checksum offload support
- MediaTek WiFi (mt76) - mt7915 MSI support - mt7915 Tx status reporting - mt7915 thermal sensors support - mt7921 decapsulation offload - mt7921 enable runtime pm and deep sleep
- Realtek WiFi (rtw88) - beacon filter support - Tx antenna path diversity support - firmware crash information via devcoredump
- Qualcomm WiFi (wcn36xx) - Wake-on-WLAN support with magic packets and GTK rekeying
- Micrel PHY (ksz886x/ksz8081): add cable test support"
* tag 'net-next-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2168 commits) tcp: change ICSK_CA_PRIV_SIZE definition tcp_yeah: check struct yeah size at compile time gve: DQO: Fix off by one in gve_rx_dqo() stmmac: intel: set PCI_D3hot in suspend stmmac: intel: Enable PHY WOL option in EHL net: stmmac: option to enable PHY WOL with PMT enabled net: say "local" instead of "static" addresses in ndo_dflt_fdb_{add,del} net: use netdev_info in ndo_dflt_fdb_{add,del} ptp: Set lookup cookie when creating a PTP PPS source. net: sock: add trace for socket errors net: sock: introduce sk_error_report net: dsa: replay the local bridge FDB entries pointing to the bridge dev too net: dsa: ensure during dsa_fdb_offload_notify that dev_hold and dev_put are on the same dev net: dsa: include fdb entries pointing to bridge in the host fdb list net: dsa: include bridge addresses which are local in the host fdb list net: dsa: sync static FDB entries on foreign interfaces to hardware net: dsa: install the host MDB and FDB entries in the master's RX filter net: dsa: reference count the FDB addresses at the cross-chip notifier level net: dsa: introduce a separate cross-chip notifier type for host FDBs net: dsa: reference count the MDB entries at the cross-chip notifier level ...
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Revision tags: v5.13 |
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#
89bddde3 |
| 24-Jun-2021 |
David S. Miller <davem@davemloft.net> |
Merge branch 'gve-dqo'
Bailey Forrest says:
==================== gve: Introduce DQO descriptor format
DQO is the descriptor format for our next generation virtual NIC. The existing descriptor form
Merge branch 'gve-dqo'
Bailey Forrest says:
==================== gve: Introduce DQO descriptor format
DQO is the descriptor format for our next generation virtual NIC. The existing descriptor format will be referred to as "GQI" in the patch set.
One major change with DQO is it uses dual descriptor rings for both TX and RX queues.
The TX path uses a TX queue to send descriptors to HW, and receives packet completion events on a TX completion queue.
The RX path posts buffers to HW using an RX buffer queue and receives incoming packets on an RX queue.
One important note is that DQO descriptors and doorbells are little endian. We continue to use the existing big endian control plane infrastructure.
The general format of the patch series is: - Refactor existing code/data structures to be shared by DQO - Expand admin queues to support DQO device setup - Expand data structures and device setup to support DQO - Add logic to setup DQO queues - Implement datapath ====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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#
22319818 |
| 24-Jun-2021 |
Bailey Forrest <bcf@google.com> |
gve: Add dqo descriptors
General description of rings and descriptors:
TX ring is used for sending TX packet buffers to the NIC. It has the following descriptors: - `gve_tx_pkt_desc_dqo` - Data buf
gve: Add dqo descriptors
General description of rings and descriptors:
TX ring is used for sending TX packet buffers to the NIC. It has the following descriptors: - `gve_tx_pkt_desc_dqo` - Data buffer descriptor - `gve_tx_tso_context_desc_dqo` - TSO context descriptor - `gve_tx_general_context_desc_dqo` - Generic metadata descriptor
Metadata is a collection of 12 bytes. We define `gve_tx_metadata_dqo` which represents the logical interpetation of the metadata bytes. It's helpful to define this structure because the metadata bytes exist in multiple descriptor types (including `gve_tx_tso_context_desc_dqo`), and the device requires same field has the same value in all descriptors.
The TX completion ring is used to receive completions from the NIC. Having a separate ring allows for completions to be out of order. The completion descriptor `gve_tx_compl_desc` has several different types, most important are packet and descriptor completions. Descriptor completions are used to notify the driver when descriptors sent on the TX ring are done being consumed. The descriptor completion is only used to signal that space is cleared in the TX ring. A packet completion will be received when a packet transmitted on the TX queue is done being transmitted.
In addition there are "miss" and "reinjection" completions. The device implements a "flow-miss model". Most packets will simply receive a packet completion. The flow-miss system may choose to process a packet based on its contents. A TX packet which experiences a flow miss would receive a miss completion followed by a later reinjection completion. The miss-completion is received when the packet starts to be processed by the flow-miss system and the reinjection completion is received when the flow-miss system completes processing the packet and sends it on the wire.
The RX buffer ring is used to send buffers to HW via the `gve_rx_desc_dqo` descriptor.
Received packets are put into the RX queue by the device, which populates the `gve_rx_compl_desc_dqo` descriptor. The RX descriptors refer to buffers posted by the buffer queue. Received buffers may be returned out of order, such as when HW LRO is enabled.
Important concepts: - "TX" and "RX buffer" queues, which send descriptors to the device, use MMIO doorbells to notify the device of new descriptors.
- "RX" and "TX completion" queues, which receive descriptors from the device, use a "generation bit" to know when a descriptor was populated by the device. The driver initializes all bits with the "current generation". The device will populate received descriptors with the "next generation" which is inverted from the current generation. When the ring wraps, the current/next generation are swapped.
- It's the driver's responsibility to ensure that the RX and TX completion queues are not overrun. This can be accomplished by limiting the number of descriptors posted to HW.
- TX packets have a 16 bit completion_tag and RX buffers have a 16 bit buffer_id. These will be returned on the TX completion and RX queues respectively to let the driver know which packet/buffer was completed.
Bitfields are used to describe descriptor fields. This notation is more concise and readable than shift-and-mask. It is possible because the driver is restricted to little endian platforms.
Signed-off-by: Bailey Forrest <bcf@google.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Reviewed-by: Catherine Sullivan <csully@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Revision tags: v5.13-rc7, v5.13-rc6, v5.13-rc5, v5.13-rc4, v5.13-rc3, v5.13-rc2, v5.13-rc1, v5.12, v5.12-rc8, v5.12-rc7, v5.12-rc6, v5.12-rc5, v5.12-rc4, v5.12-rc3, v5.12-rc2, v5.12-rc1, v5.12-rc1-dontuse, v5.11, v5.11-rc7, v5.11-rc6, v5.11-rc5, v5.11-rc4, v5.11-rc3, v5.11-rc2, v5.11-rc1, v5.10, v5.10-rc7, v5.10-rc6, v5.10-rc5, v5.10-rc4, v5.10-rc3, v5.10-rc2, v5.10-rc1, v5.9, v5.9-rc8, v5.9-rc7, v5.9-rc6, v5.9-rc5, v5.9-rc4, v5.9-rc3, v5.9-rc2, v5.9-rc1, v5.8, v5.8-rc7, v5.8-rc6, v5.8-rc5, v5.8-rc4, v5.8-rc3, v5.8-rc2, v5.8-rc1, v5.7, v5.7-rc7, v5.7-rc6, v5.7-rc5, v5.7-rc4, v5.7-rc3, v5.7-rc2, v5.7-rc1, v5.6, v5.6-rc7, v5.6-rc6, v5.6-rc5, v5.6-rc4, v5.6-rc3, v5.6-rc2, v5.6-rc1, v5.5, v5.5-rc7, v5.5-rc6, v5.5-rc5, v5.5-rc4, v5.5-rc3, v5.5-rc2, v5.5-rc1, v5.4, v5.4-rc8, v5.4-rc7, v5.4-rc6, v5.4-rc5, v5.4-rc4, v5.4-rc3, v5.4-rc2, v5.4-rc1 |
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08987822 |
| 16-Sep-2019 |
Dmitry Torokhov <dmitry.torokhov@gmail.com> |
Merge branch 'next' into for-linus
Prepare input updates for 5.4 merge window.
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Revision tags: v5.3 |
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d3f9990f |
| 14-Sep-2019 |
Takashi Iwai <tiwai@suse.de> |
Merge branch 'for-next' into for-linus
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Revision tags: v5.3-rc8, v5.3-rc7, v5.3-rc6 |
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75bf465f |
| 23-Aug-2019 |
Paul Mackerras <paulus@ozlabs.org> |
Merge remote-tracking branch 'remotes/powerpc/topic/ppc-kvm' into kvm-ppc-next
This merges in fixes for the XIVE interrupt controller which touch both generic powerpc and PPC KVM code. To avoid mer
Merge remote-tracking branch 'remotes/powerpc/topic/ppc-kvm' into kvm-ppc-next
This merges in fixes for the XIVE interrupt controller which touch both generic powerpc and PPC KVM code. To avoid merge conflicts, these commits will go upstream via the powerpc tree as well as the KVM tree.
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
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Revision tags: v5.3-rc5 |
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58e16d79 |
| 13-Aug-2019 |
Tony Lindgren <tony@atomide.com> |
Merge branch 'ti-sysc-fixes' into fixes
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cbd32a1c |
| 12-Aug-2019 |
Thomas Gleixner <tglx@linutronix.de> |
Merge tag 'efi-urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi into efi/urgent
Pull a single EFI fix for v5.3 from Ard:
- Fix mixed mode breakage in EFI config table handling for
Merge tag 'efi-urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi into efi/urgent
Pull a single EFI fix for v5.3 from Ard:
- Fix mixed mode breakage in EFI config table handling for TPM.
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4aa31b4b |
| 12-Aug-2019 |
Dmitry Torokhov <dmitry.torokhov@gmail.com> |
Merge tag 'v5.3-rc4' into next
Sync up with mainline to bring in device_property_count_u32 andother newer APIs.
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Revision tags: v5.3-rc4 |
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3f61fd41 |
| 09-Aug-2019 |
Alex Deucher <alexander.deucher@amd.com> |
Merge tag 'v5.3-rc3' into drm-next-5.4
Linux 5.3-rc3
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Revision tags: v5.3-rc3 |
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ed32f8d4 |
| 29-Jul-2019 |
Rodrigo Vivi <rodrigo.vivi@intel.com> |
Merge drm/drm-next into drm-intel-next-queued
Catching up with 5.3-rc*
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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